Sustained Ukrainian long-range drone strikes are beginning to take their toll on Russia’s oil industry to a dramatic extent. According to the energy industry analysis firm EA Analytics, Russia had been processing an average of 3.91 million barrels of crude oil per day. This is the lowest level of production from Russia’s refineries that has been recorded since March 2005. Records show this is more than 1.4 million barrels a day below the year-ago average, according to the latest data. That shortfall has forced the Russian government to ban most diesel exports until the end of July.